;



Sampath Jayarathna

 | U.K.S. Jayarathna | Ukwatta Jayarathna | Also known as : Sam  |

Graduate Student

Perception Engineering Laboratory
Department of Computer Science
Texas State University - San Marcos
San Marcos, TX 78666

 Tel: 512-665-6293/5480
sampath AT txstate DOT edu 
 Yahoo: sampathid2003   |   Skype: sampathid2003  

Home  |  Open Maze Blog Feed  |  Achievements  |  My Cyber-Space Bookshelf  
Research | Publications | Memberships | Professional Activities | Awards | Other Memberships | Work Experience  

Short Bio

Sampath Jayarathna is a second year Graduate student at the Human Computer Interaction Laboratory,  advised by Dr. Oleg Komogortsev. Currently he is researching on the sensitivity analysis of the two-dimentional oculomobor plant mathematical model for saccadic eye movement trajecotory prediction. 

Before coming to Texas State for his MS degree in Computer Science, he earned his B.Sc. (First class honors) in Computer Science from University of Peradeniya, Sri Lanka, and B.IT. (External) from University of Colombo, Sri Lanka.  

His research interests are in the area of  Brain and Cognitive Science, Computational Neuroscience, Human Oculomotor Plant Modeling, Man-Machine interaction (MMI), and Artificial Life (Alife). Within this context he is currently researching human vision &  two-dimensional oculomotor plant saccadic trajectory prediction with its applications toward Biometrics. He received prestige Sigma Xi grant-in-aid of research grant “twice” for his proposals on Biometric identification and mTBI patient’s deficiency in the oculomotor function. 

Sampath is currently serving as the College of Science representative for the Associate Student Government -Graduate House  and  also serving as a Committee Member for the Equity and Access Committee, Texas State University - San Marcos.  He is an associate member of Sigma Xi research society, and a graduate student member of IEEE CS, and ACM professional societies. 

 

Academic Resume (.pdf)
Academic Resume (web)

Research Interests

Brain & Cognitive Science - Oculomotor Systems, Computational Neuroscience, Human Computer Interactions (HCI), Human Oculomotor Plant Modeling, Human Factors in Usability Studies, Bioengineering - Biological Systems & Models, Natural Language Processing, Fuzzy Logic Control, ALife. 

Research Collaborations

2D Oculomotor Plant Mathematical Model Development (2DOPMM)
Advisor: Dr. Oleg Komogortsev

Goal: Create anatomically accurate Oculomotor Plant (eye globe + extraocular muscles) model. 
Motivation: Improve understanding of the Human Visual System. Research new strategies for eye movement prediction for eye gaze guided computer interaction. Measuring extraocular muscle effort for usability evaluation. Neuronal control modeling for biometric research.

 

Biometrics - Collaboration with Lawrence Berkeley National Laboratory
Advisors: Dr. Oleg Komogortsev, and Dr. Cecilia Aragon (Berkeley Lab)

Goal: Research new methods that allow a person's identification based on the eye movement and the oculomotor plant metrics. 
Motivation: Biometric methods employed today such as fingerprint identification and iris recognition can be technically breached by creating a model of a finger or a retina by using holographic methods. The properties of the eye movements allow to conduct a behavioral evaluation of a person potentially allowing to strengthen the security of the identification.

 

Physical Therapy Research - Collaboration with Department of Physical Therapy Texas State
Advisors: Dr. Oleg Komogortsev, and Dr. Denise Gobert (Physical Therapy)

Goal: Research cognitive and oculomotor function in persons with mild Traumatic Brain Injuries (mTBI). Measure response to customized exercise including balance retraining or oculomotor training. Develop oculomotor exercises that allow to alleviate mTBI symptoms.
Motivation: Current treatment regimens fail to address the co-morbidities common to patients with mild traumatic brain injury (mTBI). As clinicians struggle to treat patients with acute and chronic mTBI, they continue to be challenged by the complex sequelae of symptoms or “symptom cluster” which includes cognitive, behavioral and physical dysfunction. This project addresses the recent evidence which suggests that a variety of oculomotor and sleep disorders are interrelated in persons with mTB and should be addressed during rehabilitative treatment protocols.

 

Publications

Refereed Journal Publications 

  1. Sampath Jayarathna and Oleg Komogortsev. " Saccadic Eye Movement Trajectory Prediction by Two-Dimensional Oculomotor Plant Mechanical Model (2DOPMM)". (In progress)

  2. Oleg Komogortsev, Denise Gobert, Sampath Jayarathna, Do Hyong Koh and Sandeep Gowda. " Standardization of Automated Analysis of Oculomotor Fixation and Saccadic Behaviors ". IEEE Transactions on Biomedical Engineering. (In Review) 

Refereed Conference Publications 

  1. Oleg Komogotsev, Sampath Jayarathna, Cecilia Aragon, and Mahmouod Mechehoul. "Biometric Identification via an Oculomotor Plant Mathematical Model". Eye Tracking Research & Applications (ETRA'2010), Austin, Texas, March 22-24, 2010, [Conference Information], (Accepted) 

  2. Oleg Komogortsev, Sampath Jayarathna, Sandeep Gowda, and Do Hyong Koh. "Qualitative and Quantitative Scoring and Evaluation of the Eye Movement Classification Algorithms". Eye Tracking Research & Applications (ETRA'2010), Austin, Texas, March 22-24, 2010, [Conference Information], (Accepted) 

  3. Oleg Komogotsev and Sampath Jayarathna,  "2D Oculomotor Plant Mathematical Model for Eey Movement Simulation". In proceedings of the 8th International Conference on Bioinformatics and Bioengineering (BIBE08), Athens, Greece, Oct 8-10, 2008, ISBN:978-1-4244-2845-8, pp.103.[Conference Information] [IEEE Xplore]

  4. Sampath Jayarathna and G.E.M.D.C. Bandara. "Junction Based Segmentation Algorithms for Offline Handwritten Connected Character Segmentation ". In proceedings of the International Conference on Computational Intelligence for Modeling Control and Automation, and International Conference on Intelligent Agents, Web Technologies and Internet Commerce (CIMCA-IAWTIC'06), Sydney, Australia, 2006, ISBN: 0-7695-2731-0, pp. 147-147. [conference information] [IEEE Xplore]  

  5. Sampath Jayarathna and G.E.M.D.C. Bandara. " New Segmentation Algorithm for Offline Handwritten Connected Character Segmentation". In Proceedings of the First International Conference on Industrial and Information Systems (ICIIS06). Peradeniya, Sri Lanka, Aug 8-11, 2006, ISBN: 1-4244-0322-7, pp. 540-546. [conference information] [IEEE Xplore]  

  6. Sampath Jayarathna and G.E.M.D.C. Bandara. " Use of Fuzzy Feature Descriptions to Segment Connected Handwritten Characters". IEEE International Conference on Industrial Technology (ICIT 2006), Mumbai, India, Dec 15-17, 2006. [Refereed, declined by authors]

Posters and other papers

  1. Sampath Jayarathna, Oleg Komogotsev, Cecilia Aragon, and Mahmouod Mechehoul. "Oculomotor Plant Biometric: Person Specific Features in Eye Movements". 2009 Sigma Xi International Research Conference, The Woodlands, Texas, Nov 12-15, 2009. [poster session paper], [Conference Information] 

  2. Sampath Jayarathna, Oleg Komogotsev, Cecilia Aragon, and Mahmouod Mechehoul. "Oculomotor Plant Biometric Identification". International Research Conference for Graduate Students, Texas State University, San Marcos, Texas, Nov 4-5, 2009. [oral presentation] [Conference Information]

Thesis

  1. Sampath Jayarathna. " Two Dimensional Oculomotor Plant Mechanical Model".
    MS Thesis, Department of Computer Science, Texas State University - San Marcos. Advisor: Prof. Oleg Komogortsev,  (In progress)

  2. Sampath Jayarathna. " Offline Handwritten Connected Character Segmentation". 
    Undergraduate Honors Thesis, Department of Statistics and Computer Science, University of Peradeniya, Sri Lanka. April 2006, Advisor: Dr. G.E.M.D.C Bandara, (Department of Production Engineering, Faculty of Engineering, University of Peradeniya, Sri Lanka )

Technical Reports

  1. Oleg Komogotsev, Sampath Jayarathna, Cecilia Aragon, and Mahmouod Mechehoul. "Biometric Identification via an Oculomtor Plant Mathematical Model". eCommons@Texas State University, Technical Report, Paper 16 , 2009.

  2. Oleg Komogortsev, Sampath Jayarathna, Sandeep Gowda, and Do Hyong Koh. "Qualitative and Quantitative Scoring and Evaluation of the Eye Movement Classification Algorithms". eCommons@Texas State University, Technical Report, Paper 15 , 2009.

  3. Oleg Komogotsev and Sampath Jayarathna, "Classification Algorithms for Saccade-related Oculomotor Plant Metrices". Technical Report TR2009-05-31, May 31st 2009.

  4. Oleg Komogotsev and Sampath Jayarathna, "2D Oculomotor Plant Mathematical Model Equations". Technical Report TR2008-05-30, May 30th 2008.

Selected Talks

  1. Sampath Jayarathna. " Oculomotor Plant Biometrics : Person-Specific Features in Eye Movements", Computational Research Division, Lawerence Berkeley National Laboratory, July 30, 2009, Berkeley, CA. [presentation slides] 

  2. Sampath Jayarathna. " 2D Oculomotor Plant Mathematical Model for Eye Movement Simulation". Advanced Human Computer Interactions, Fall 2008, Texas State University - San Marcos. [presentation slides]

  3. Sampath Jayarathna. " New Segmentation Algorithm for Offline Handwritten Connected Character Segmentation". ICIIS06, Peradeniya, Sri Lanka, Aug 8-11, 2006, 

Softwares

  1. I-Gaze, Eye Guided Image Viewer Interface
    I-Gaze interface is an image viewing application capable of navigating through a set of grouped pictures (albums) using eye movements as the primary input.

[Top]

Professional Society Memberships 

  • (2009 -to date) Associate Student Member,Sigma Xi: The Scientific Research Honor Society
    Membership in Sigma Xi is by nomination and is conferred in one of two ways. Full Membership is conferred upon any individual who has shown noteworthy achievement as an original investigator in a field of pure or applied science or engineering. Associate Membership is available to any individual who has, through initial research achievement in a field of pure or applied science, shown an aptitude for research.

  • (2009 -to date) Graduate Student Member, ACM. (Association for Computing Machinery)

  • (2009 -to date) Graduate Student Member, IEEE Computer Society.

  • (2008 -to date) Graduate Student Member, IEEE.

  • (2008)              Graduate Student Member, IEEE Communication Society. 

[Top]

Professional Activities

  • Reviewer, Eye Tracking Research & Applications Symposium (ETRA'10) (invited by Dr. Oleg Komogortsev)

  • Student Moderator, International Research Conference for Graduate Students, Texas State University, San Marcos, Texas, Nov 4-5, 2009.

  • Student Volunteer, Eye Tracking Research & Applications (ETRA'10) Symposium, Austin, Texas, March 22-24, 2010.

  • ASG Graduate House Nominee, Equity and Access Committee, Texas State University - San Marcos. 2009/2010
    The Equity and Access committee provides oversight, advice, and support for the Texas State diversity plan in support of the University's goal to "Enrich our learning and working environment" by attracting and supporting a more diverse faculty, staff, and student body.

  • Administrative Board Member, Forum Moderator and Country Manager (USA), www.SL2college.com 
    SL2college is a global community that provides free advice and guidance to Sri Lankan students. SL2college was envisioned in 2005 with the primary goal of helping Sri Lankan students access relevant information that would assist them make informed decisions about their education goals overseas.

  • Student Moderator, Graduate Student Research Symposium, Texas State University - San Marcos, March 26, 2009

  • Associated Student Government (ASG) Graduate House - College of Science representative, Texas State University
    The related graduate student legislative body of the Associated Student Government is the Graduate House of Representatives.  The House consists of fourteen senators.  House seats are determined by college, with each college allowed two representatives.  Representatives are to represent their respective colleges as well as the entire graduate student body (i.e., Liberal Arts, Health Professions, Science, Business, etc.).

  • Reviewer, International Conference on Innovations in Software Engineering (ISE'08)

  • Reviewer, International Conference on Computational Intelligence for Modeling Control and Automation (CIMCA'08)

  • Reviewer, International Conference on Intelligent Agents, Web Technologies and Internet Commerce (IAWTIC'08)

  • Graduate Research Assistant (GRA) Selection Committee Member - Fall 2008, International Office, Texas State University - San Marcos. 

[Top]

Grants Received

[Top]

Awards, Honors, Scholarships, and Internships

Texas State Universty - San Marcos (USA)

USA

  • Lawrence Berkeley National Laboratory Graduate Student Research Intern - Summer 2009
    Oculomotor Plant Signature Modeling in Biometrics. Computational Research Division, Lawrence Berkeley National Lab.
    Advisors: Dr. Oleg Komogortsev, and Dr. Cecilia Aragon.

  • Sigma Xi: The Scientific Research Honor Society, Associate Student Member Status.
    Membership in Sigma Xi is by nomination and is conferred in one of two ways. Full Membership is conferred upon any individual who has shown noteworthy achievement as an original investigator in a field of pure or applied science or engineering. Associate Membership is available to any individual who has, through initial research achievement in a field of pure or applied science, shown an aptitude for research.

University of Peradeniya (Sri Lanka)

  • University Award for Academic Excellence, University of Peradeniya, Sri Lanka.  2006.
    Awarded by the University of Peradeniya, Sri Lanka  to recognize outstanding academic achievement in Bachelor of Science in Computer Science (B.Sc First Class - Honors).

  • ALUMNI Scholarship, Faculty of Science, University of Peradeniya, Sri Lanka, Amount: Rs 10,000

National Scholarships (Sri Lanka)

  • ICIIS06 Full Scholarship, for the Paper Submission, Registration and Presentation at the First International Conference on Industrial and Information Systems (ICIIS06), Peradeniya, Sri Lanka. 2006, Amount: Rs.10,000

  • Mahapola Higher Education Scholarship (monthly stipend - 4 academic years) - 2001/2005, Sri Lanka
    To provide assistance to deserving youth who have completed their secondary education satisfactorily, so as to enable them to complete their academic, industrial or technical education at a university of technical or higher educational institute.

[Top]

Student Society Memberships

[Top]

Teaching 

      Department of Computer Science, Texas State University - San Marcos, TX

  • CS 2308   - C++ and C Programming (Theory - substitution for Dr. Oleg Komogortsev).

  • CS 5369J  - Advanced Human Computer Interactions (Theory - substitution for Dr. Oleg Komogortsev).

      Department of Computer Science & Statistics, University of Peradeniya, Sri Lanka

  • CS 100 - Computer Applications (Laboratory).

  • CS 101 - Introduction to Computer Science (Theory).

  • CS 102 - Programming Laboratory (Laboratory).

  • CS 407 - Object Oriented Software Design with Patterns (Laboratory).  

[Top]

Work Experience

June  2009

- July    2009

Graduate Student Intern, Advanced Computing for Science, Lawrence Berkeley National Laboratory, Berkeley, CA
Oct.   2008

- present

Graduate Research Assistant, Human Computer Interaction Laboratory, Computer Science, Texas State.
May  2008

- Sep.    2008

Graduate Research Assistant, Office of Correspondence, Extension and Study Abroad, Texas State.
May  2007

- Oct.    2008

Graduate Research Assistant, International Office, Texas State.
Mar.  2007 

- May   2007

Student Worker, International Office, Texas State.
May  2006

- Oct.    2006

Lecturer in Computer Science, Department of Statistics & Computer Science, University of Peradeniya, Sri Lanka.  
July   2005

- Oct.    2006  

Visiting Lecturer in Computer Science, American College of Higher Education, Kandy, Sri Lanka.  
Aug.  2005

- Oct.    2008

Visiting Instructor, World Bank IRQUE Project, ITC, University of Peradeniya, Sri Lanka.  
Feb.   2005

- Feb.    2006  

Student Instructor, Information Technology Center, University of Peradeniya, Sri Lanka.

[Top]

Last updated: ©2009, All rights reserved

Firefox 2

Official Texas State Disclaimer

You are visitor # Site Meter